Consider five individuals with different occupations. Allen prepares taxes wants ribs Betty does dry cleaning wants computer fixed Calvin fixes computers wants bread Diedre bakes bread wants taxes prepared Eric barbecues ribs wants dry cleaning If this economy has money a. Allen will buy from Betty b. Betty will buy from Calvin c. Eric will buy from Allen d. None of the above are correct.

D. None of the above are correct.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answer; automated fingerprint;